/**
* \brief Set SLCD power mode.
*
* \param p_supc Pointer to a SUPC instance.
* \param mode The mode of SLCDC.
*/
void supc_set_slcd_power_mode(Supc *p_supc, enum slcdc_power_mode mode)
{
enum slcdc_power_mode pre_mode;
uint32_t tmp;
pre_mode = supc_get_slcd_power_mode(p_supc);
if ((pre_mode == SLCDC_POWER_MODE_LCDON_EXTVR) &&
(mode == SLCDC_POWER_MODE_LCDON_INVR)) {
return;
} else if ((pre_mode == SLCDC_POWER_MODE_LCDON_INVR) &&
(mode == SLCDC_POWER_MODE_LCDON_EXTVR)) {
return;
}
tmp = p_supc->SUPC_MR;
tmp &= ~SUPC_MR_LCDMODE_Msk;
tmp |= SUPC_MR_KEY_PASSWD | mode;
p_supc->SUPC_MR = tmp;
if (mode == SLCDC_POWER_MODE_LCDOFF) {
while(supc_get_status(p_supc) & SUPC_SR_LCDS_ENABLED);
} else {
while(!(supc_get_status(p_supc) & SUPC_SR_LCDS_ENABLED));
}
}
/**
* \brief Test slow clock source switching.
*
* This test switches the slow clock on the crystal oscillator output.
*
* \param test Current test case.
*/
static void run_supc_test(const struct test_case *test)
{
uint32_t status = 0;
uint32_t timeout = 0;
/* Test: Switch the slow clock on the crystal oscillator output */
supc_switch_sclk_to_32kxtal(SUPC, 0);
do {
status = supc_get_status(SUPC);
if (status & SUPC_SR_OSCSEL_CRYST) break;
} while (timeout++ < SLOW_CLK_TIMEOUT);
test_assert_true(test, (status & SUPC_SR_OSCSEL_CRYST) == SUPC_SR_OSCSEL_CRYST, "Test: switching slow clock source failed!");
}
